<template>
  <Dropdown
    placement="bottom"
    :trigger="['click']"
    :dropMenuList="localeList"
    :selectedKeys="selectedKeys"
    @menu-event="handleMenuEvent"
    overlayClassName="app-locale-picker-overlay"
  >
    <span class="cursor-pointer flex items-center">
      <Icon icon="ion:language" />
      <span v-if="showText" class="ml-1">{{ getLocaleText }}</span>
    </span>
  </Dropdown>
</template>
<script lang="ts" setup>
import type { LocaleType } from "/#/config";
import type { DropMenu } from "/@/components/general/Dropdown";
import { Dropdown } from "/@/components/general/Dropdown";
import { ref, watchEffect, unref, computed } from "vue";
import { Icon } from "/@/components/general/Icon";
import { useLocale } from "/@/i18n/UseLocale";
import { localeList } from "/@/settings/I18nSetting";

const props = defineProps({
  /**
   * Whether to display text
   */
  showText: { type: Boolean, default: true },
  /**
   * Whether to refresh the interface when changing
   */
  reload: { type: Boolean }
});

const selectedKeys = ref<string[]>([]);

const { changeLocale, getLocale } = useLocale();

const getLocaleText = computed(() => {
  const key = selectedKeys.value[0];
  if (!key) {
    return "";
  }
  return localeList.find((item) => item.event === key)?.text;
});

watchEffect(() => {
  selectedKeys.value = [unref(getLocale)];
});

async function toggleLocale(lang: LocaleType | string) {
  await changeLocale(lang as LocaleType);
  selectedKeys.value = [lang as string];
  props.reload && location.reload();
}

function handleMenuEvent(menu: DropMenu) {
  if (unref(getLocale) === menu.event) {
    return;
  }
  toggleLocale(menu.event as string);
}
</script>

<style lang="less">
.app-locale-picker-overlay {
  .ant-dropdown-menu-item {
    min-width: 160px;
  }
}
</style>
